From: Chenyi Qiang <chenyi.qiang@intel.com>
To: Ruihan Li <lrh2000@pku.edu.cn>
Cc: Paolo Bonzini <pbonzini@redhat.com>, <lei4.wang@intel.com>,
"Sean Christopherson" <seanjc@google.com>,
Jim Mattson <jmattson@google.com>,
"Joerg Roedel" <joro@8bytes.org>, kvm <kvm@vger.kernel.org>,
"Kernel Mailing List, Linux" <linux-kernel@vger.kernel.org>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>
Subject: Re: The current status of PKS virtualization
Date: Wed, 12 Nov 2025 09:06:05 +0800 [thread overview]
Message-ID: <f0be7fe5-bdb8-44bc-aa57-7728a72b0b08@intel.com> (raw)
In-Reply-To: <hrfy7h7oob5qimip6midrmuy53vqgbdfgnmwc5avi2zdsd3l36@ts43lrmct5r3>
On 11/11/2025 10:24 PM, Ruihan Li wrote:
> On Tue, Nov 11, 2025 at 01:40:08PM +0800, Chenyi Qiang wrote:
>> Lei has left Intel so the mail address in unreachable.
>>
>> And as you found, we dropped the PKS KVM upstream along with the base PKS support
>> due to no valid use case in Linux. You can feel free to continue the upstream work.
>
> Thanks for the reply and for the information!
>
> By the way, I'm just curious (feel free to ignore this question): Is
> there an on-list discussion that rejects the originally proposed PKS use
> cases?
>
> I found that pmem stray write protection was rejected [1], but there is
> no reason given nor any reference provided. After searching the list, I
> found the latest patch series that attempts to add pmem stray protection
> [2]. However, I didn't find any discussion rejecting the use case. Maybe
> the discussion happened off the list? Or did I miss something?
The discussion happened off the list. The customer demand for this feature
declined to such an extent that it was not worth working on any longer.
prev parent reply other threads:[~2025-11-12 1:06 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-24 10:15 [PATCH v7 0/8] KVM: PKS Virtualization support Lei Wang
2022-04-24 10:15 ` [PATCH v7 1/8] KVM: VMX: Introduce PKS VMCS fields Lei Wang
2022-05-24 20:55 ` Sean Christopherson
2022-05-27 1:55 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 2/8] KVM: VMX: Add proper cache tracking for PKRS Lei Wang
2022-05-24 21:00 ` Sean Christopherson
2022-05-27 2:16 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 3/8] KVM: X86: Expose IA32_PKRS MSR Lei Wang
2022-05-24 22:11 ` Sean Christopherson
2022-05-27 9:21 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 4/8] KVM: MMU: Rename the pkru to pkr Lei Wang
2022-04-24 10:15 ` [PATCH v7 5/8] KVM: MMU: Add helper function to get pkr bits Lei Wang
2022-05-24 23:21 ` Sean Christopherson
2022-05-27 9:28 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 6/8] KVM: MMU: Add support for PKS emulation Lei Wang
2022-05-24 23:28 ` Sean Christopherson
2022-05-27 9:40 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 7/8] KVM: VMX: Expose PKS to guest Lei Wang
2022-05-24 23:34 ` Sean Christopherson
2022-05-27 9:42 ` Wang, Lei
2022-04-24 10:15 ` [PATCH v7 8/8] KVM: VMX: Enable PKS for nested VM Lei Wang
2022-05-20 1:24 ` Sean Christopherson
2022-05-27 9:55 ` Wang, Lei
2022-05-06 7:32 ` [PATCH v7 0/8] KVM: PKS Virtualization support Wang, Lei
2025-11-10 16:29 ` The current status of PKS virtualization Ruihan Li
2025-11-10 20:44 ` Paolo Bonzini
2025-11-11 1:14 ` Ruihan Li
2025-11-11 5:40 ` Chenyi Qiang
2025-11-11 14:24 ` Ruihan Li
2025-11-12 1:06 ` Chenyi Qiang [this message]
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